Research and analysis on standards for installation and maintenance of heat exchange components
The structure of the process equipment heat exchange element should be safe and reliable, and the possibility of mutual penetration of the heat transfer body and the process medium should be avoided. The requirements for equipment, manufacturing, and reliability, and the test and monitoring procedures for the operation and working conditions of the heat exchange components shall be determined by departmental standard documents (specifications). For gas phase process equipment and gas pipelines, vapor condensation may occur depending on the conditions of the process. If necessary, there shall be means for collecting and discharging liquid. When the equipment is regularly cleaned according to the operating procedures of the process unit, it is necessary to use hydraulic equipment, mechanical equipment or chemical methods as usual to prevent personnel from staying in the equipment. Devices with explosive and fire hazard products shall be equipped with means for connection to water, steam, and inert gas piping. The device may also be equipped with a ventilator. For explosion and fire hazard process systems, the equipment and piping may be subjected to vibration during operation according to the nature of the work. There should be methods and measures to avoid vibrations acting on the seals and reduce vibration on adjacent components and building structures in the process system. The role.
The level of vibration allowed for individual types of equipment and its components (parts, parts), the method and equipment for its detection shall be in accordance with the relevant national standards and regulatory documents, and shall be reflected in the equipment technical documents. Equipment layout. The arrangement of process equipment and pipe fittings in the production plant and open air should ensure safe and convenient operation, and it is possible to carry out repairs and take operational measures to prevent accidents or localize accidents. The arrangement of process equipment and pipelines in the plant, in the open-air installation, and the layout of the bridges shall be considered for the possibility of visual inspection of the working conditions, completion of maintenance, repair and replacement. Explosion and fire hazard production process equipment shall not be arranged in: upper and lower of auxiliary workshop; under the bridge under the process pipeline with explosive products, corrosive articles and explosive dangerous substances; the site of open-air pumping station and compressor station, application Except in the case of oil-free sealed pumps, or special safety measures are taken to eliminate explosions and fire hazards falling on equipment that is low. Equipment that has been removed from the process system should be withdrawn from the plant when it is in the plant of Class I and Class II explosion hazard process projects, and in the remaining cases it should be isolated from the system currently in operation.
Building Assessories
Building Assessories mainly regards metal as raw material. such as ordinary carbon steel cold-rolled strip, cold drawn low-carbon steel wire, a variety of copper, aluminum, light metal alloys and malleable iron.
The general metal sheet as the main raw material products use stamping process. Some use casting process, and then the rough after cutting. The resulting products are generally subjected to surface treatment after assembly.
Building Assessories performance, we must ensure that the dimensions are accurate, with precision parts, appearance and surface must be bright and uniform.
Building Assessories is an important part of the internal structure and various facilities of industrial and civil buildings. It not only has the function of use, but also increasingly requires decorative effects and a certain artistic level to adapt to the development of the modern construction industry.
Building Accessories,Metal Building Parts Accessories,Metal Building Accessories,Steel Building Accessories
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